2-HYDROXY-2-METHYLPROPIOPHENONE

PRODUCT IDENTIFICATION

CAS NO.

7473-98-5, 71833-40-4; 75718-48-8, 126038-32-2

2-HYDROXY-2-METHYLPROPIOPHENONE

EINECS NO. 231-272-0
FORMULA C6H5COC(CH3)2OH
MOL WT.

164.20

H.S. CODE 2914.40.4000
UN NO.

 

TOXICITY

Oral Rat LD50: 1694mg/kg

SYNONYMS

2-Hydroxy-2-methylpropiophenone; Daracure 1173;

2-Hydroxy-2-methyl-1-phenylpropanone; Irgacure 1173; UV 1173; 2-Benzoyl-2-propanol; 1-Phenyl-2-hydroxy-2-methylpropan-1-one; 1-Hydroxy-1-methylethyl phenyl ketone; 1-Phenyl-2-hydroxy-2-methyl-1-propanone; 2-Benzoyl-2-hydroxypropane; alpha-Hydroxyisobutyrophenone; alpha-Hydroxy-alpha, alpha,alpha-dimethylacetophenone; alpha-Hydroxy-alpha-methylpro Piophenone;

SMILES O=C(c1ccccc1)C(O)(C)C

CLASSIFICATION

Acetophenone, Photoinitiator, Polymerization Initiator,

EXTRA NOTES

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE clear to pale yellow liquid
MELTING POINT < -5 C
BOILING POINT  
SPECIFIC GRAVITY

1.07 - 1.10

SOLUBILITY IN WATER Insoluble
SOLVENT SOLUBILITY Soluble in most organic solvents

 

 

AUTOIGNITION  
pH  
VAPOR DENSITY  
NFPA RATINGS Health: 2; Flammability: 1; Reactivity: 0
FLASH POINT

110 C

STABILITY Stable under ordinary conditions

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking (Radical polymerization)

Material Safety Data Sheet (Ciba)

Google Scholar Search

Local:
Polymerization is initiated generally by free radical. There are four types of free radical initiators which initiate polymerization.

  • Peroxides including hydroperoxides (tertiary-butyl hydroperoxide, benzoylperoxide)
  • Azocompound thermal initiators (azoisobutyronitrile)
  • Redoxinitiators (mixture of iron(III) acetylacetonate): free radicals are formed by one-electron transferreactions. Useful in low temperature and emulsion polymerization
  • Photoinitiators (benzoin, benzil dimethylketal)

The main advantage of polymerization started by photoinitiators is temperature-independence and easy control. It can be conducted at very low temperatures and can be stopped simply by removing the light source. Photoinitiators are compounds that break down into free radicals upon exposure to ultraviolet radiation. Photoinitiators undergo a unimolecular bond cleavage upon irradiation to yield free radicals (benzoin esters; benzil ketals; alpha-dialkoxy acetophenones; alpha-hydroxy-alkylphenones; alpha-amino alkyl- phosphine; acylphosphine oxides). Another type of photoinitiators undergo a bimolecular reaction where the excited state of the photoinitiator interacts with a second molecule (a coinitiator) to generate free radicals(benzo phenones,amines; thioxanthones,amines; titanocenes). Photoinitiators are widely applied in UV curing inks, wood coatings, paper coatings, optical fiber, PCB, screen printing , paper varnish and other surface coatings.

SALES SPECIFICATION

APPEARANCE

clear to pale yellow liquid

ASSAY

99.0% min

RESIDUE ON IGNITION

0.1% max

TRANSPORTATION
PACKING 200kgs in drum
HAZARD CLASS  
UN NO.  
SAFETY INFORMATION
Hazard Symbols: XN, Risk Phrases: 22, Safety Phrases: 26-36-61



PRICE INFORMATION